Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “MAGNETISM”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,009 records · Page 56Linked to original sources
PubMed1995

[Diagnostic possibilities of magnetic resonance tomography (MRT) and magnetic resonance angiography (MRA) in popliteal artery entrapment syndrome (PAES)].

MRT offers some advantages for morphological examinations of the fossa poplitea and appears to be superior in terms of multiplanar imaging over CT and duplex sonography for identifying a PAES. The method is always indicated when the diagnosis of PAES is suspected from the primary duplex sonography but the verification of the anatomic alteration is not conclusive. An MR angiography can, in principle, be carried out in the same session. On consideration of the currently presented cases, both inflow and phase-contrast MRA appear to be suited for examination. However, a sufficient detail resolution is only achieved by use of a surface coil which then makes assessment of the contralateral side and the lower leg arteries impossible. Specially fitted coils which allow a double-sided representation of sufficient image quality may, however, make conventional angiography unnecessary in future.

Adult↗
PubMed1993

Imaging criteria to identify the epileptic focus. Magnetic resonance imaging, magnetic resonance spectroscopy, positron emission tomography scanning, and single photon emission computed tomography.

The use of MRI, MRSI, PET, and SPECT scanning for preoperative evaluation of patients with epilepsy is reviewed. MRI provides the best anatomic detail and contains prognostic information. PET provides useful information in some patients for whom MRI findings are absent or contradictory. Interictal SPECT scanning lacks sufficient specificity to be of use in the preoperative evaluation of refractory patients, whereas ictal SPECT appears to be useful in temporal and extratemporal lobe epilepsy. The new technique of MRSI is described.

Diagnostic Imaging↗
PubMed1996

[The clinical aspect of the joint use of magnetic resonance tomography of the brain and magnetic resonance angiography of the extra- and intracranial arteries in patients with arterial hypertension].

NMR tomography (NMRT) of the brain and NMR angiography (NMRA) of the extra- and intracranial arteries were performed on the unit Magnetom 63 SP (1.5 T) Siemens in 13 healthy controls and 87 patients with cerebrovascular diseases initiated by arterial hypertension and atherosclerosis of major cerebral arteries. NMRA image of arterial impairment comprise curved extracranial arteries. NMRT picture of the brain was changed (extension of liquor spaces, small hyperintensive foci in the white matter) in mild and moderate hypertension. Frequency of these phenomena and their severity increase with growing severity of the disease reaching maximum in malignant hypertension. In atherosclerosis of the major cerebral arteries NMRT often detected strokes, for the most part ischemic. A direct relationship between the degree of arterial stenosis and incidence of the strokes was not found.

Adolescent↗
PubMedDate not supplied

Gamekeeper thumb: diagnosis of ulnar collateral ligament injury using magnetic resonance imaging, magnetic resonance arthrography and stress radiography.

Ulnar collateral ligament (UCL) tears may be nondisplaced or displaced relative to the adductor pollicis aponeurosis. Nondisplaced tears typically heal with immobilization whereas displaced tears require surgery. Nineteen patients with UCL injuries were evaluated using MR Imaging (MRI), MR arthrography, and stress radiography (SR) to determine the efficacy of these techniques in differentiating nondisplaced from displaced UCL tears. Nineteen patients with UCL Injuries were evaluated. MRI was utilized in 5 patients, and MR arthrography in 14, with 12 of these 14 undergoing SR. They were followed until resolution of symptoms; those without relief, and those with suspected displaced UCL tears were surgically explored. Surgery and imaging was correlated. Eight patients underwent surgical repair. SR was abnormal in six patients treated surgically, but was negative in four of six conservatively treated patients with MR findings of nondisplaced tears. All patients with MR or MR arthrographic findings interpreted as being normal or as having a nondisplaced tear improved after conservative treatment. Based on surgical findings and clinical followup, MR arthrography accurately diagnosed 13 of 14 UCL injuries, with one false-positive interpretation. SR is often falsely negative. MR imaging with or without intra-articular contrast injection proved to be accurate in a small series of patients with UCL injuries.

Adult↗